Hydraulic motor.



No. 870,379. l PATBNTBD NOV. 5, 1907.

' -w. P. MOTHER,

HYDRA'ULIO MOTOR.

APPLIUATION FILED HAB. 12, 1907.

- action desired.

UNrrnn srarns 'Parar-Ir orsi-CE.l i

WALTER F. MOTTIER, O F GIBSON CITYf'ILLINOIS.

HYDRAULIC Moron.

Naam-,379.

Specification of Letters Fatent. Appiicauon sied March 12. 1 907. semi No. 362.022.

'Patented Nov. 5, 1907.

This invention relates to a reciprocating or other uid motor, and it embodies novel means for' auto- `maticallyactuating valves for controlling admission of-water or other iiuidto opposite sides of a piston or 'pistons for thepurpose of obtaining the reciprocating The object of 4the -invention is to provide a motor of .thisclass which may be used inrconnection with a pump at` any-timeor wherever a reciprocating motion is desired, and wherever a head f water or fluid under .pressure is available, and which shall be simple in `construction and thoroughly eicient in operation.

`With these and other ends in viewy which will readily appear asthe nature of the invention is better underrstood, the same consists in the improved construction and novel arrangement and assemblage of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawing has been illustrated :a simple and preferred form of the invention; it being,

however, understood that no limitation is necessarily -made to the precise structural details therein exhibited, but that changes, alterations4 and modifications Within the scope of the invention may be resorted to when desired.

.ln the drawing, Figure 1 is a longitudinal sectional view of the motor with the parts in one position. Fig. 2 is a longitudinal sectional view showing the parts in the opposite position.

Corresponding parts in both figures are denoted by like characters of reference.

It is desired to state at the outset that the relative position of the main cylinder and the cylinders constituting the valve chest casings may be changed as desired, provided that the connections are maintained in substantially the form shown; for convenience of description the terms right7 and left, and other relative terms will be used with reference to the formillustrated in the drawings; and the construction of the motor will be' described in connection with its operation to enable both to be more readily understood. The Water or Yother fluid enters under pressure through a supply pipe l provided with branches 2 and 3 connected with the primary valve casing 22.and the secondary valve casing- 21 about centrally between the heads or ends of said valve casings'. The primary valve casing 22 contains a valve formed of a rod 23 carrying four spaced pistons 24, 24h, 24 and 24d which are moved simultaneously to open and close certain connections as will hereinafter appear.

The secondary valve-casing 21 contains a valve formed of tive spaced pistons 25, 25h, 25., 25ul and 25e mounted upon and connected by a rod 26 whereby they are moved vsimultaneously to open certain connections I as will hereinafter appear.

The water or motive iluid entering the valve' casing 21 throughthe pipe 3` atthemiddle thereof, as shown in Fig. 1, passes between pistons 25b and 25 through ports 11 and 12 and a connectingd'uct or pipe A intrl the left end of the Valve casing 22, forcing the pistons to the right end thereof, as shown in Asaid Fig. 1.

The motive fluid from the source of supply enters the middle of valve casing 22 through induction pipe 2 passing between thepistons 2lib and 24c and through ports 4 and 6 and a connecting duct B from the valve casing 22 to the right end of the main cylinder 20 lwhich hastherein twoV spaced pistons 27*L and 27b connected by a piston rod 28 which operates through a gland 19 in the head of the cylinder. The fluid so entering under pressure through the'ports 4 and 6 and connecting duct B forces the pistons in the main cylinder 20 to the left end thereof, to the position shown in Fig. 2. Part of the Water. so admitted passes through a port or duct 8 which is located so as to be opened at the end of the stroke into the right end of valve casing 21, forcing the pistons to the left end of said casing to the position shown in Fig. 2, and this forces the water from theleft end of said casing through a port or duct 17 into the main cylinder 2 0 between the pistons 27 and 27", and out throughan eduction pipe 18 connected with said main cylinder nearthe middle thereof. This movement of the pistons in the valve casing .2l separates the inlet pipe or port 3 from the port 11 and likewise separates the ports 9 and 15, and places in communication the ports 11 and 16,' and likewise the port 9 and the inlet pipe or port 3, as will be seen in Fig. 2. Water passes through the induction pipe 3 between the pistons 25 and -25d through ports 9 and lOand a Iconnecting-duct C which connects the space in the seconaary valve chest adjacent tothe induction pipe with the right end of the primary valve chest, forcing the pistons in the'latter to the left end thereof, as shown in Fig. 2 and forcing the water or fluid from thel left end of valve casing 22 out through ports 12 and 11 and connecting duct `A, through valve casing 21 between the pistons 25b and 25C, and

through the port or duct 16 into the main cylinder 20 i between the pistons 27 and 27b and out through the discharge pipe 18. When the pistons 27L and 27b in the main cylinder 20 are moved to the left, the pistons in the valve vcasing 22 are in the position shown in Fig. l, and the water or fluid from the left end of the main cylinder is free to pass through port-s 7 and 5 and connecting duct D to the space between the pistons 24a and 241 in the valve casing 22which is connected through an eduction pipe or port 13 which is connected the ports 11 and 16 While the induction pipe or port 3 'so with the space in the main cylinder between the pistons in the latter-which is constantly 4open to the ex- When the pistons in valve casing 22 take the position shown in Fig. 2, fluid from the source of supply passes through the pipe or .port 2 between the pistons 24b and `24c in said valve casing 22 and through the ports 5 and 7 and connecting duct D to the left end ythe port or pipe 14 which connects said space with the l exhaust space between the pistons in the main cylinder.

A portion of the water or iiuid entering the lett end of the cylinder 2O passes through the port or duct 17 into the left end of the valve casing 21 forcing the pistons to the right end of the latter as indicated in Fig. l. This movement 'of the valve forces Athe water from the right end of casing 21 through the port or duct 8 into the exhaust space between the pistons in the main cylinder and out through the eduction pipe 18. This latter motion of the valve in the casing 21 disposes 4the valve pistons in a position to separate the inlet port or pipe 3 from the port 9 and likewise to separate is placed in communication with thel port l1, and the ports 9 and 15 are likewise placed in communication with each other, as shown in Fig. 1.

The water or\fiu\id from the source of supply will then pass through Athe pipe or port 3 into the valve casing 21 between the pistons 25b and 25", and through the. ports ll and 12 and connecting duct A into the left end o the valvey casing 2,2, forcing the pistons in the latter to the right end thereof, and forcing the water from the right end of said valve casing .through the ports 10-9 and connecting duct C into lthe valve casing 21 between the pistons 25 and 25d," thence through the port or duct 15 into .the exhaust space between the pistons in the `main cylinder, and out through the eductionpipe 18. This movement of the pistons in the valve casing 22 separates the port 5 from the inlet 2 and the port 4 from the exhaust port 14 while the port 4 is placed'in communication with the inlet 2 and the ports 5 and 13 are placed in communication with each other. Fluid may now pass from the source of supply through the ports or passages 2, 4, B and 6 to the right end of the main cylinder 20, and the action is repeated. 1

The operation of the motor as hereinbefore described causes the respective valve pistons to pass to one side or the other of the respective ports, as will be readily understood. The action o f the valves is positive and automatic, and the entire motor is characterized by simplicity and cheapness of construction. I

Having thus fully described the invention, what I claim as new isz- In a iluid motor' of the character described, acylinder, a piston rod mounted for reciprocation therein, and extending through one of the heads thereof, two suitably spaced pistons upon said rod, a. primary valve chest, a valve rod mounted forreciprocation in the latter, four pistons suitably spaced upon said rod, ports and dcts so connecting the ends of the cylinder with the pr'imary valve chest that in the various positions of the valve rod, one of said connections will be open and the other closed to the supply; a secondary valve chest; a valve rod mounted for reciprocaton in the latter, ve suitably spaced pistons upon said valve rod, four ports so 'connecting the secondary valve chest with the cylinder that in each-terminal position oi!` the piston rod in the latter, three of said ports shall communicate with the space .between the pistons while. the fourth port shall communicate through the ports and ducts aforesaid with the primary valve chest', ports and ducts constantly connecting the spaces between the terminal pistons upon the valve rod in the primary valve chest with the space between the pistons in the cylinder, an. eduction port in the space intermediate the pistons in the cylinder',l means for supplying fluid under pressure to i Witnesses:

WM. A. DAVIDSON, J. H. 'Joannie l 

